Configuring Shelf-Controller Redundancy (APX 8000)
Configuring the APX 8000 for shelf-controller redundancy
admin> set
admin> write
After you assign IP addresses to the controllers, you can verify that the TAOS unit is a valid IP host on its configured networks by pinging other hosts on those networks, as shown in the following example:
admin> ping 192.168.100.56
PING 192.168.100.56: 56 Data bytes
64 bytes from 192.168.100.56: icmp_seq=0 ttl=255 time=0 ms
64 bytes from 192.168.100.56: icmp_seq=1 ttl=255 time=0 ms
2 packets transmitted, 2 packets received, 0% packet loss
Defining the soft IP interface for fault tolerance
The APX 8000 supports an internal soft IP interface that is always available. It is associated only with the primary controller and is hidden from the secondary controller.
The APX 8000 sets up the soft IP interface after you power on the unit and a controller becomes primary. If a switchover occurs and the secondary controller becomes primary, the soft IP interface is initialized and associated with the new primary controller. The soft IP interface address is reachable as long as one IP interface on the APX 8000 (on an Ethernet card, for example) is operational.
The
admin> dir ip-interface
6 06/17/1999 03:06:00 { {
1906/21/1999 23:54:02 { {
1906/25/1999 17:45:30 { {
If RIP is enabled, the APX 8000 advertises the soft IP interface address as a host route (with a prefix length of /32) using the loopback interface. If RIP is not enabled, routers one hop away from the APX 8000 must have a static route to the soft interface address.
Example of setting the soft IP address
You activate the soft IP interface by entering an IP address for {{
admin> read
admin> set
admin> write
APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide |
